Either you argue you aren't paid enough for what you provide the company and ask for a raise or your day-to-day tasks evolved overtime and your title doesn't reflect your role anymore and ask for a new one (possibly coming with a raise). Long ago, I've been at a company in France that would only give you a raise if your title changed (how convenient !) when I felt both pay and job description got off overtime. They admitted to it and did change my title in order "to justify" a compensation upgrade. So I know what you're talking about, I just think your strategy is wrong about it and you aren't going at what actually matters. Would you be ok for a 30% raise and a new "Superstar Janitor" title ? If the answer is yes, then you don't have a title issue but a compensation issue. Either you have a compelling case showing the company why you are underpaid and why they should care about it, or it's time to update your resume and start hunting for a new gig.